propane injection helps with completly burning all the fuel. I have never tried to figure out but, what does it cost per gallon of fuel to run it in your truck, does it make since for the make up in mpg?
What about using at high pressures? The lift in the tires could decrease the rolling resistance significantly and the truck may only feel like 4000 lbs instead of 8000!
Thats not too bad. . with todays fuel prices that makes you get about 16mpg cost wise. At $20 propane for 400 miles and 19. 5 mpgs.